Doc White / Humpback Whale (Megaptera novaeangliae) calf. Tonga, South Pacific, September.

DOC WHITE / Blue whale underwater close-up of head and mouth feeding with pouch inflated, Mexico

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) expelling air and water from mouth through baleen plates after engulfing part of a baitball of Sardines, Sardinops sagax, off Baja California, Mexico (Easte...

Doug Perrine / Bryde's whale, Balaenoptera brydei / edeni) swimming past underwater photographer Brandon Cole, off Baja California, Mexico (Eastern Pacific Ocean)

Wild Wonders of Europe / Aukan / Three Killer whales / Orcas (Orcinus orca) underwater, Kristiansund, Nordmre, Norway, February 2009. WWE INDOOR EXHIBITION

Sue Flood / Beluga whales trapped at ice hole {Delphinapterus leucas} too far away to reach open sea, Canadian High Arctic. June 1999

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, with scuba diver in background, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

Doug Perrine / Sperm whale (Physeter macrocephalus) juvenile female aged about 6-11 years, Endangered Species, Commonwealth of Dominica, Caribbean, March

Doc White / Humpback Whale (Megaptera novaeangliae) calf, Tonga, South Pacific, September.

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, Arctic circle Dive Center, White Sea, Karelia, northern Russia. Captive

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) swimming over a bait ball of Sardines, three ridges on forehead that distinguish the Bryde's whale from other mysticetes are prominently visible. Off Baja C...

Bertie Gregory / Killer whale (Orcinus orca) tail slapping at sunset, transient race, Vancouver Island, British Columbia, Canada, July.

Juergen Freund / Dwarf minke whale {Balaenoptera acutorostrata} portrait, Queensland, Australia

Doc White / Blue Whales (Balaenoptera musculus) throat inflated, filter feeding at sea surface. California, USA. Sequence 1 of 2.

Doug Perrine / False killer whale ( Pseudorca crassidens ) with mouth open, showing large conical teeth, captive, aquarium, from Indo-pacific, digitally manipulated

Doug Perrine / Bryde's whale {Balaenoptera brydei / edeni} with throat pleats expanded after feeding on baitball of Sardines {Sardinops sagax} off Baja California, Mexico, Eastern Pacific Ocean. Veolia Environnement...

Doug Perrine / Humpback whale mother and calf below surface {Megaptera novaeangliae} Hawaii, Pacific Ocean - taken under research permit #633 ~(Non-ex).

Franco Banfi / Sperm Whale (Physeter macrocephalus) Pico Island, Azores, Portugal, Atlantic Ocean

Sue Flood / Humpback whale (Megaptera novaeangliae) calf just below the surface, Vava'u, Kingdom of Tonga, South Pacific, August

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) spyhopping to assess where seal is on ice floe and to intimidate, Antarctica. Taken on location for BBC Froz...

Doug Allan / Killer Whales (Orcinus orca) approaching Weddell Seal (Leptonychotes weddellii) in preparation to knock it from the ice by creating a wave. Marguerite Bay, Antarctic Peninsula, summer. Freeze Frame bo...

Chris & Monique Fallows / Orca (Orcinus orca) pod hunting common dolphin (Delphinus delphis) False Bay, South Africa.

Wild Wonders of Europe / Lundgren / Sperm whale (Physeter macrocephalus) Pico, Azores, Portugal, June 2009

Franco Banfi / Sperm Whale (Physeter macrocephalus) Pico Island, Azores, Portugal, Atlantic Ocean

Eric Baccega / Narwhal (Monodon monoceros) crossing tusks above water surface. Baffin Island, Nunavut, Canada, April.

Bryan and Cherry Alexander / Close up of Narwhal (Monodon monoceros) in water showing its ivory tooth, Northwest Greenland.

Doc White / Narwhal (Monodon monoceros) swimming near the surface, seen from the air. Pond Inlet, Canadian Arctic

Doug Allan / White / Beluga whale pod {Delphinapterus leucas} migrating through sea ice, Arctic Canada. Aerial

Doc White / Close up of Grey whale (Eschrichitius robustus) eye, Baja California, Mexico, Pacific

Juan Carlos Munoz / Southern right whale (Eubalaena australis / Balaena glacialis australis) flipping its tail out of the water. Valdes Peninsula, Patagonia, Argentina, Oct 2008

Mark Carwardine / Humpback whale (Megaptera novaeangliae) at surface, spouting, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Killer whale {Orcinus orca} hunting sealion pup Patagonia, Argentina

Sue Flood / Killer whale / Orca {Orcinus orca} attacks Grey whale calf {Eschrichtius robustus} California, USA

Dan Burton / Beluga / White whale {Delphinapterus leucas} White sea, Russia, captive

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice, Arctic circle Dive Center, White Sea, Karelia, northern Russia Captive

DOC WHITE / Beluga / White whale at sea surface {Delphinapterus leucas} arctic Canada

DOC WHITE / Aerial view of Belugas / White whale {Delphinapterus leucas} near sea surface, Canadian arctic

Doc White / Humpback Whale (Megaptera novaeangliae) mother and calf at sea surface. Tonga, South Pacific, September.

Wild Wonders of Europe / Lundgren / Sei whale (Balaenoptera borealis) fin showing above water, Pico, Azores, Portugal, June 2009

Steven Kazlowski / Killer Whale / Orca (Orcinus orca) large bull, cow and calf swimming in Resurrection Bay, Kenai Fjords National Park, outside Seward, Alaska, May.

Bertie Gregory / Humpback whale (Megaptera novaeangliae) close up of mouth whilst spyhopping, Vancouver Island, British Columbia, Canada, July.

Franco Banfi / Beluga whale (Delphinapterus leucas) tries to bite camera in play, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

Franco Banfi / Tail of Southern right whale (Eubalaena australis) at sunset, Golfo Nuevo, Peninsula Valdes, UNESCO Natural World Heritage Site, Chubut, Patagonia, Argentina, Atlantic Ocean, October

Bertie Gregory / Killer whale (Orcinus orca) spyhopping, Vancouver Island, British Columbia, Canada, July.

Mark Carwardine / Blue whale (Balaenoptera musculus) blowing / spouting, Endangered species, Sea of Cortez, Baja California, Mexico

Doc White / Blue Whale (Balaenoptera musculus) at sea surface. California, USA.

Mark Carwardine / Aerial view of Blue whale + calf {Balaenoptera musculus} Sea of Cortez, Mexico

Denis-Huot / Killer whales (Orcinus orca) off the coast of British Columbia, North Pacific Ocean

Doug Perrine / Pod of Shortfin pilot whales {Globicephala macrorhynchus} North Atlantic.

Nuno Sa / Sperm Whale (Physeter macrocephalus) female and calf. Sao Miguel Island, Azores, July.

Todd Pusser / Breaching Cuvier's beaked whale {Ziphius cavirostris} Atlantic, USA

Wild Wonders of Europe / Relanzón / Three Shortfin pilot whales (Globicephala macrorhynchus) Canary Islands, Spain, Europe, May 2009